I'm 5'10" 140lbs. and a 32" waist. I am still growing, could I pull off a large or would it be too big?

Tech Specs:

Material:

[shell] 100% nylon twill 

Fabric Waterproof Rating:

20K 

Fabric Breathability Rating:

20000g 

Insulation:

shell 

Fit:

boot cut (tapered in @ knee, slight flare @ ankle) 

Venting:

inseam vents 

Side Zips:

yes 

Seams:

fully taped 

Waist:

elastic, belt loops 

Pockets:

2 front, 2 back 

RECCO:

no 

Recommended Use:

snowboarding 

Manufacturer Warranty:

1 year